extern char Enoerror[];         /* no error */
extern char Emount[];           /* inconsistent mount */
extern char Eunmount[];         /* not mounted */
extern char Eismtpt[];          /* is a mount point */
extern char Eunion[];           /* not in union */
extern char Emountrpc[];        /* mount rpc error */
extern char Eshutdown[];        /* device shut down */
extern char Enocreate[];        /* mounted directory forbids creation */
extern char Enonexist[];        /* file does not exist */
extern char Eexist[];           /* file already exists */
extern char Ebadsharp[];        /* unknown device in # filename */
extern char Enotdir[];          /* not a directory */
extern char Eisdir[];           /* file is a directory */
extern char Ebadchar[];         /* bad character in file name */
extern char Efilename[];        /* file name syntax */
extern char Eperm[];            /* permission denied */
extern char Ebadusefd[];        /* inappropriate use of fd */
extern char Ebadarg[];          /* bad arg in system call */
extern char Einuse[];           /* device or object already in use */
extern char Eio[];              /* i/o error */
extern char Etoobig[];          /* read or write too large */
extern char Etoosmall[];        /* read or write too small */
extern char Enoport[];          /* network port not available */
extern char Ehungup[];          /* i/o on hungup channel */
extern char Ebadctl[];          /* bad process or channel control request */
extern char Enodev[];           /* no free devices */
extern char Eprocdied[];        /* process exited */
extern char Enochild[];         /* no living children */
extern char Eioload[];          /* i/o error in demand load */
extern char Enovmem[];          /* virtual memory allocation failed */
extern char Ebadfd[];           /* fd out of range or not open */
extern char Enofd[];            /* no free file descriptors */
extern char Eisstream[];        /* seek on a stream */
extern char Ebadexec[];         /* exec header invalid */
extern char Etimedout[];        /* connection timed out */
extern char Econrefused[];      /* connection refused */
extern char Econinuse[];        /* connection in use */
extern char Eintr[];            /* interrupted */
extern char Enomem[];           /* kernel allocate failed */
extern char Enoswap[];          /* swap space full */
extern char Esoverlap[];        /* segments overlap */
extern char Emouseset[];        /* mouse type already set */
extern char Eshort[];           /* i/o count too small */
extern char Egreg[];            /* the front fell off */
extern char Ebadspec[];         /* bad attach specifier */
extern char Enoreg[];           /* process has no saved registers */
extern char Enoattach[];        /* mount/attach disallowed */
extern char Eshortstat[];       /* stat buffer too small */
extern char Ebadstat[];         /* malformed stat buffer */
extern char Enegoff[];          /* negative i/o offset */
extern char Ecmdargs[];         /* wrong #args in control message */
extern char Ebadip[];           /* bad ip address syntax */
extern char Edirseek[];         /* seek in directory */
